MICROWAVE CORPORATION

9 - 108

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9

HMC468LP3

v00.0403

1 dB LSB GaAs MMIC 3-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 6.0 GHz

Pin Descriptions

Pin Number

Function

Description

Interface Schematic

1, 3, 4, 8, 9, 10, 12

N/C

These pins should be connected to PCB RF ground to maxi-

mize performance.

2,11

RF1, RF2

This pin is DC coupled and matched to 50 Ohm. Blocking

capacitors are required

13 - 15

V1 - V3

See truth table and control voltage table.

5 - 7

ACG1 - ACG3

External capacitor to ground is required.

Select value for lowest frequency of operation.

Place capacitor as close to pins as possible.

16

Vdd

Supply Voltage

GND

Package bottom has an exposed metal paddle

that must be connected to RF/DC ground.

Application Circuit